Static and fluctuating zigzag order, and possible signatures of Kitaev physics, in torque measurements of $\alpha$-RuCl${}_3$

Shaun Froude-Powers, Subin Kim, Jacob Gordon +3

We have measured magnetic torque on a $T_N=7$ K single crystal of $\alpha$-RuCl${}_3$, as a function of the field angle in the $ab$-plane, focusing on temperatures between 2 and 20 K and…